WHO KILLED PHILADELPHIA JANE DOE (1972)?

According to https://unidentified-awareness.fandom.com/wiki/Philadelphia_Jane_Doe_(May_1972), and https://www.crimewatchers.net/threads/philadelphia-jane-doe-wf-40-60-found-in-philadelphia -pa-7-may-1972-upper-dentures-inscribed-d-spizziri.582/ , on May 7, 1972, the body of a woman was found inside an abandoned building located at 620 W Montgomery Avenue in Philadelphia and never identified, bearing the name “D. Spizzirri” on her teeth and she was killed by strangulation. According to https://www.websleuths.com/forums/threads/pa-philadelphia-whtfem-40-60-up17721-upper-denture-w-d-spizzirri-frontal-lobotomy-may72.370997/, this is a confidential practice